When Twitter launched, its concept was easy to understand: you’d “follow” accounts who could post short messages through the system. When you logged in, you could see a list of these messages in the order they were published, starting with the latest. (Of course, you could also post messages that the people who followed you could see in their message lists.)
Twelve years on, many details of how Twitter works have evolved, but the basic principle remains the same. That is, except for the message list; that has changed in a significant way. A chronological list of messages doesn’t scale very well you’re following hundreds of active accounts. So a couple of years ago, Twitter changed the way it presents messages in its “feed”: instead of showing you the latest stuff in the chronological order the messages were posted, the feed changed to show messages that Twitter deemed most relevant to you.
This algorithmic feed arguably made it easier for newer users to see valuable content, but it made it more difficult for experienced users to keep track of conversation threads that depended on the order in which messages were posted. Twitter is now enabling a setting to allow users to determine whether they prefer to see the algorithmic feed or the simpler chronological one by default.
This is a major structural change to the environment that will benefit the people who need it. I’m one of those people: Seeing tweets in this simple reverse-chronological order is one of the reasons why I prefer using third-party Twitter clients. I’m glad to see the return of the simple reverse-chronological feed. (Although I wish Twitter would work with third-party developers to get their apps back to full functionality — I so much prefer using the Tweetbot app in my Mac over the Twitter web interface!)